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Finding the Fourth Proportional to 475,666.51, 656,503.70 and 284,679.45

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Solution

The fourth proportional to 475,666.51, 656,503.70 and 284,679.45 is: 392,907.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,666.51 : 656,503.70 = 284,679.45 : x
  2. Step 2: Convert to fraction form
    475,666.51/656,503.70 = 284,679.45/x
  3. Step 3: Cross multiply
    475,666.51x = 656,503.70 × 284,679.45
  4. Step 4: Simplify right side
    475,666.51x = 186,893,112,238.97
  5. Step 5: Solve for x
    x = 186,893,112,238.97/475,666.51
  6. Step 6: Final answer
    x = 392,907.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.